<template>
  <div class="table">
      <div class="crumbs">
          <i class="el-icon-tickets"></i>该歌单全部歌曲信息
      </div>
      <div class="container">
        <div class="handle-box">
            <el-input class="handle-input" v-model="select_word" size="mini" placeholder="请输入要查询的歌曲名"></el-input>
            <el-button type="primary" size="mini" @click="centerDialogVisible = true">添加歌曲</el-button>
            <el-button type="danger" size="mini" @click="delAll">批量删除</el-button>
        </div>
      </div>
       <el-table size="mini" border style="width:100%" height="590px" :data="tableData" @selection-change="handleSelectionChange">
            <el-table-column  type="selection" width="40"></el-table-column>
            <el-table-column prop="name" label="歌手-歌名"  align="center"></el-table-column>
            <el-table-column label="操作" width="150" align="center">
              <template slot-scope="scope">
                  <el-button size="mini" type="danger" @click="handleDelete(scope.row.id)">删除</el-button>
              </template>
            </el-table-column>        
        </el-table>
       
      <el-dialog title="添加歌曲" :visible.sync="centerDialogVisible" width="400px" center>
          <el-form :model="registerForm" ref="registerForm" label-width="80px"  id="tf">
              <el-form-item prop="singerName" label="歌手名" size ="mini">
                    <el-input v-model="registerForm.singerName" placeholder="歌手名"></el-input>
              </el-form-item>
              <el-form-item prop="songName" label="歌曲名" size ="mini">
                    <el-input v-model="registerForm.songName" placeholder="歌曲名"></el-input>
              </el-form-item>       
          </el-form>
          <span slot="footer">
            <el-button type="" size="mini" @click="centerDialogVisible = false">取消</el-button>
            <el-button type="" size="mini" @click="getSongId">确定</el-button>
          </span>
      </el-dialog>
      
    <el-dialog title="删除歌曲" :visible.sync="delVisible" width="300px" center>     
        <div align="center">一经删除，不可恢复！请确认是否删除？</div>   
          <span slot="footer">
            <el-button type="" size="mini" @click="delVisible = false">取消</el-button>
            <el-button type="" size="mini" @click="deleteRow">确定</el-button>
          </span>
    </el-dialog>
  </div>
</template>

<script>
import { mixin } from '../mixins/index';
import {listSongDetail,songOfSongId,songOfSongName,listSongAdd,delListSong} from '../api/index';
import '@/assets/js/iconfont.js';

export default {
  mixins: [mixin],
  data(){
    return{
        centerDialogVisible: false,   //添加弹框是否显示
        delVisible: false,            //删除弹窗是否显示
            registerForm:{      //添加框
              singerName: '',
              songName: ''
            },
        tableData: [],    //el-table数据
        tempData: [],     //查询事件发生时要展示的数据你需要for循环展示的数据
        select_word: '',  //input绑定的查询关键词
        idx: -1,          //当前选择的歌手（单项删除）
        multipleSelection: [],    //选中了什么歌手项
        songListId: ''             //歌单id         
    }
  },
  watch: {
    //搜索框里的内容发生变化时候，搜索结果table列表的内容跟着发生变化
    select_word: function(){
        if(this.select_word == ''){
            this.tableData = this.tempData;
        }else{
            this.tableData = [];
            for(let item of this.tempData){
                if(item.name.includes(this.select_word)){
                    this.tableData.push(item);
          }
        }
      }
    },
    
  },
  created(){
        this.songListId = this.$route.query.id;
        this.getData();
    },
  methods: {
     //查询所有歌曲
        getData(){
            this.tempData = [];
            this.tableData = [];
            listSongDetail(this.songListId).then(res => {
                for(let item of res){
                    this.getSong(item.songId);
                }
            })
        },
      //根据歌单ID查询歌曲对象，存入  tempData，tableData
      getSong(id){
            songOfSongId(id)
            .then(res => {
                this.tempData.push(res);
                this.tableData.push(res);
            })
            .catch(err => {
                console.log(err);
            });
        },
      //添加歌曲前，获取歌曲ID
      getSongId(){
            let _this = this;
            var songOfName = _this.registerForm.singerName+"-"+_this.registerForm.songName;
            songOfSongName(songOfName).then(
                res => {
                    _this.addSong(res[0].id)
                }
            )
        },
     //添加歌曲
        addSong(songId){
            let _this = this;
            let params = new URLSearchParams();
            params.append('songId',songId);
            params.append('songListId',this.songListId);

            listSongAdd(params)
            .then(res => {
                if(res.code == 1){
                    this.getData();
                    this.notify("添加成功","success");
                }else{
                    this.notify("添加失败","error");
                }
            })
            .catch(err => {
                console.log(err);
            });
            _this.centerDialogVisible = false;
        },
      
        //删除歌曲
        deleteRow(){
            delListSong(this.idx,this.songListId)
            .then(res => {
                if(res){
                    this.getData();
                    this.notify("删除成功","success");
                }else{
                    this.notify("删除失败","error");
                }
            })
            .catch(err => {
                console.log(err);
            });
            this.delVisible = false;
        }   
    },
}
</script>

<style scoped>
  .handle-box{
    margin-bottom: 20px;
    display: flex;
    justify-content: flex-end;
  }
   .song-img{
        width: 100%;
        height: 80px;
        border-radius: 5px;
        margin-bottom: 5px;
        overflow: hidden;
    }
    .crumbs{
        height: 10px;
    }
    .handle-input{
      width: 300px;
      display: inline-block;
    }
   
    .pagenation{
      display: flex;
      justify-content: center;
    }
    .play {
        position: absolute;
        z-index: 100;
        width: 80px;
        height: 80px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        top: 18px;
        left: 15px;
    }
    .icon {
        width: 2em;
        height: 2em;
        color: white;
        fill: currentColor;
        overflow: hidden;
    }
</style>